Question

Find the total surface area of a solid cylinder of radius $5cm$ and height $10cm$. Leave your answer in term of $\pi$.

Answer 1

Given
The Radius of a solid cylinder $\left(r\right)=5cm$
Height $\left(h\right)=10cm$
Hence
Total surface area $=2\pi rh+2\pi r^2$
$=2\pi r(h+r)$
$=2\pi \times 5(10+5)$
$=\pi \times 10\times 15$
$=150\pi {cm}^2$